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Search for : (n*2^n-1)?


Rank
Probable prime
Digits (> 10000)
Who?
When?
4457(497167*2^497167-1)/70975149664Anonymous04/2025
4470(496423*2^496423-1)/223573149439Anonymous04/2025
68565(119574*2^119574-1)/(5*619)35997Jens K. Andersen02/2009
69943(115663*2^115663-1)/43934821Jens K. Andersen02/2009
71443(109131*2^109131-1)/732856Donovan Johnson10/2006
71485(108932*2^108932-1)/7332795Donovan Johnson10/2006
71666(108176*2^108176-1)/133728023579975532555Donovan Johnson10/2006
71896(107188*2^107188-1)/179094332266Donovan Johnson10/2006
72000(106825*2^106825-1)/389843303796526564932144Donovan Johnson10/2006
72306(105931*2^105931-1)/169061032237428599306229655931867Donovan Johnson10/2006
72874(104013*2^104013-1)/18531314Donovan Johnson09/2006
73477(101988*2^101988-1)/9490730702Donovan Johnson09/2006
146467(101026*2^101026-1)/330417Donovan Johnson09/2006
151842(98168*2^98168-1)/1219929553Donovan Johnson09/2006
153351(93449*2^93449-1)/137415984455728124Donovan Johnson09/2006
155281(88641*2^88641-1)/3391926685Donovan Johnson09/2006
156885(86365*2^86365-1)/1926003Donovan Johnson09/2006
157561(85310*2^85310-1)/428708766676925674Donovan Johnson09/2006
158479(83747*2^83747-1)/41809525210Donovan Johnson09/2006
159421(82454*2^82454-1)/93524824Donovan Johnson09/2006
159718(82101*2^82101-1)/37028903258148724706Donovan Johnson09/2006
160393(81118*2^81118-1)/40824324419Donovan Johnson09/2006
161502(79436*2^79436-1)/898733786523908Donovan Johnson03/2005
162623(78409*2^78409-1)/216742389744875890172103123585Donovan Johnson03/2005
163028(77814*2^77814-1)/21957623322523418Donovan Johnson03/2005
163442(77216*2^77216-1)/12552766032523239Donovan Johnson03/2005
165069(74930*2^74930-1)/3824733267863922548Donovan Johnson03/2005
165262(74662*2^74662-1)/26332412122472Donovan Johnson03/2005
165756(73985*2^73985-1)/297347565922268Donovan Johnson03/2005
167527(71695*2^71695-1)/19909801948162062539660358473790823921552Donovan Johnson03/2005
170562(68544*2^68544-1)/1003923649592026720623Donovan Johnson03/2005
170579(68525*2^68525-1)/1038144181784507720617Donovan Johnson03/2005
193956(67209*2^67209-1)/402676192582920225Donovan Johnson03/2005
199896(66563*2^66563-1)/193870648230920030Donovan Johnson03/2005
205117(65717*2^65717-1)/1436119784Donovan Johnson03/2005
206212(63782*2^63782-1)/180611407270319193Donovan Johnson03/2005
206594(63178*2^63178-1)/20533754278025894624526319000Donovan Johnson03/2005
206703(62956*2^62956-1)/935385458771260636518938Donovan Johnson03/2005
208025(61237*2^61237-1)/4483718435Donovan Johnson03/2005
210430(59200*2^59200-1)/136519505193917814Donovan Johnson03/2005
211708(58103*2^58103-1)/979923930343786593317477Donovan Johnson03/2005
211830(58010*2^58010-1)/348296891045372031197317446Donovan Johnson03/2005
212364(57550*2^57550-1)/33061741710122717315Donovan Johnson03/2005
212779(57176*2^57176-1)/517216Donovan Johnson01/2005
214473(55872*2^55872-1)/5465916820Donovan Johnson03/2005
215497(55225*2^55225-1)/26788712496822062169716609Donovan Johnson03/2005
217247(54086*2^54086-1)/916308573697716274Donovan Johnson03/2005
221856(52267*2^52267-1)/64401004670577515724Donovan Johnson03/2005
225363(51573*2^51573-1)/1587140533100378515514Donovan Johnson03/2005
234396(49313*2^49313-1)/103514847Donovan Johnson03/2005
234432(49293*2^49293-1)/514843Donovan Johnson03/2005
234493(49314*2^49314-1)/366170419992514838Donovan Johnson03/2005
238069(48179*2^48179-1)/92117714503Donovan Johnson03/2005
246991(44491*2^44491-1)/63618191313389Donovan Johnson03/2005
249296(43590*2^43590-1)/367243113120Donovan Johnson03/2005
250513(43075*2^43075-1)/111983171312963Donovan Johnson03/2005
253555(41799*2^41799-1)/2401541312580Donovan Johnson03/2005
253821(41698*2^41698-1)/6242972712550Donovan Johnson03/2005
259693(39712*2^39712-1)/101150902022372111945Donovan Johnson03/2005
261754(38844*2^38844-1)/924475311691Donovan Johnson03/2005
262610(38529*2^38529-1)/33844311598Donovan Johnson03/2005
264055(37928*2^37928-1)/42241060612111411Donovan Johnson03/2005
267484(36560*2^36560-1)/362311007Donovan Johnson01/2005
280096(34671*2^34671-1)/1359091387910432Donovan Johnson03/2005
280955(34420*2^34420-1)/2246715910359Donovan Johnson03/2005
282716(34133*2^34133-1)/2311510276Donovan Johnson03/2005

Total : 66 PRP(s)



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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: May, 07 2026 09:50 (Time in France)